I am unable to perform a tune-up. All wiring inside the outdoor condenser unit is burnt up. A mouse took residence inside the compressor blanket and chewed and shorted the wires on the compressor heater, causing all the wires to burn up. The unit cannot run, so I don’t know if the internal compressor wiring is also shorted. The unit is 12-13 years old. Turn information over to Ian to talk with the customer about replacing the air conditioner and maybe the furnace.